Stop-collar for power-shafts.



Uivrrnn STATES atented November 10, i903..

OLE RUDD, OF DULUTH, MINNESOTA.

STOP-COLLAR FOR POWER-SHAFTS.

SPECIFLLGATION forming' parli 0f Letters Patent NO. 743,932, dated November 10, 1903.

Application filed April 12, 1902. Seria1N0102,660. (No model.)

T LZZ whom, t ntayconcern; 1

Beit known that I, OLE RUDD, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Stop-Collars for Power-Shafts; and I do hereby declare the following to be a full, clear, and exact description of the 'invention, such as will enable others skilled in the art to which it appertains to make and use the S21/me.

My invention relates to stop-collars for power-shafts, and has for its object the provision of a collar which may be slipped on the shaft from the end and rigidly secured thereto at any desired point intermediate of the ends by means lying wholly within the collar and oifering no-exterior projection at any point and which collar may be easily removed without injury to its parts.

It consists of an integral collar, in the interior face of which is formed an annularlydirected groove deeper at one end than at the other, and two apertures respectively penetrating the periphery of said collar and communicating withthe respective ends of said groove, and a segmental wedge shaped key adapted to lie in said groove and move longitudinally of the same.

It also consists of certain other constructions, combinations, and arrangements of parts, as will be hereinafter more particularly set forth and claimed.

In the accompanying` drawings, Figure 1 represents an edge view of a collar embodying; the features of my invention and shown applied to a portion of a power-shaft. Fig. 2 represents a transverse section through said shaft, collar, and wedge in operative position, showing a foreign driving-tool in operating position. Fig. 3 represents a similar view through the collar detached. Fig. et represents an enlarged detail perspective view of said wedge. Fig. Y5 represents a view similar to Fig. 2 of a slightlymodified form of collar.

In the drawings, l represents a portionof any-suitable power-shaft, upon which I secure the collar 2 by means of a segmental wedge-key 3, in which is preferably formed the groove 4, forming biting edges 5 5, which key is adapted to lie within an annnlarly-directed groove 6, formed in the inner face of said collar 2, which groove 6 is at one end of a depth equal to the greatest depth of said wedge and from such end tapers toward its opposite end and is so formed that when said wedge is thrust toward such shallow end it will project slightly from said groove and engage said shaft. Approximately radial apertures 7 andv 8 are also formed in said collar 2, penetrating the periphery thereof and communicating, respectively, with the deep and shallow ends of said groove 6, one of the walls of each of which apertures is beveled in an annular direction, said beveled wall inclinin g downwardly toward the end of said groove 6,

whereby a foreign driving-tool, as 9, may be thrust at an incline into said apertures, so as to engage the corresponding end of said wedge for driving it in either direction along said groove. In operation said wedge is inserted from the inside of said collar into said groove at the deeper end thereof, the deeper end of the wedge lying in the deeper end of the groove. The collar is then slipped onto the shaft from the end thereof to the point'desired. The tool 9 is next inserted in said aperture 7 at an angle and engages the end of said key 8, whereupon said tool is driven by a hammer or by other suitable means, forcing said key forwardly in said groove 6 in an annular direction toward the shallower end thereof, causing the cutting edges 5 of said key to emerge slightly from said groove and to bite into said shaft, thus preventing longitudinal movement of said collar along said shaft. To remove said collar, said tool 9 is introduced into the aperture 8 and the key 3 driven backward in said groove until out of engagement with said shaft. It is obvious that the contour or direction of said groove or key, or both of them, is capable of slight modiiication or variation within the scope of my said invention, and I do not desire to limit myself to the exact contours or directions described. It is obvious also that if desired a plurality of similar grooves and corresponding recesses may be formed in said collar and a similar key operated in each of said grooves, as indicated in Fig. 5, within the scope of my said invention.

Having fully dcscribed'my'invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A collar mechanism comprising a collar formed with an annularly-disposed Wedge'- shaped recess let into its inner face, the said recess extending only part Way around the collar so that the Walls formed by the material of the collar extend on every side of the re.- cess except the inner side, and a wedge-shaped block arranged Within the recess tapering to correspond therewith, the block engaging the shaft continuously along its inner edge and engaging the wall of the collar opposite along its outer edge, the said Wedge-shaped recess having small passages leading to the opposite ends thereof for the reception of adjusting tools to tighten or loosen the Wedge, substantially as described.

2. A collar mechanism, comprising a body 74eme portion, Wedge-shaped, ann ularly-disposed recesses sunk into its inner face, Wedge-blocks mounted therein and formed With annularlyextending biting edges for engaging the shaft OLE RUDD.

lVitnesses:

J AMES T. WATSON, S. H. ECKMAN. 

